CN111719419A

CN111719419A - Temporary fixing and pre-deviation adjusting device for bridge support

Info

Publication number: CN111719419A
Application number: CN202010739325.7A
Authority: CN
Inventors: 李高升; 师艳武; 严嘉林
Original assignee: Shandong Longxiang New Materials Technology Co ltd; Wuhan Qiaozhiheng Bridge Engineering Technology Co ltd
Current assignee: Shandong Longxiang New Materials Technology Co ltd; Wuhan Qiaozhiheng Bridge Engineering Technology Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2020-09-29

Abstract

The invention relates to a device for temporary fixing and pre-deviation adjustment of a bridge bearing, which comprises an upper support plate and a lower support plate which are respectively connected with an upper bridge structure and a lower bridge structure, wherein a plurality of temporary fixing devices are connected between the upper support plate and the lower support plate, two pre-deviation adjusting devices are also arranged between the upper support plate and the lower support plate, each pre-deviation adjusting device comprises a temporary clamping block fixedly connected with the upper support plate and a limiting clamping block fixedly connected with the lower support plate, a transmission assembly is arranged between the temporary clamping block and the limiting clamping block, and the transmission assembly drives the upper support plate to slide relative to the lower support plate. The temporary fixing and pre-deviation adjusting device for the bridge support not only can realize the fixing of the bridge support in the transportation and installation processes, but also can realize the pre-deviation adjustment and re-adjustment of the bridge support, and is low in installation cost and convenient to construct.

Description

Temporary fixing and pre-deviation adjusting device for bridge support

Technical Field

The invention relates to the technical field of bridges, in particular to a device for temporarily fixing a bridge support and adjusting pre-deviation.

Background

Bridge bearings are vital structural components that connect the upper and lower structures of a bridge. The support is used for reliably transmitting the counter force and the deformation (displacement and corner) of the upper structure of the bridge to the lower structure of the bridge, so that the actual stress condition of the bridge structure conforms to the theory of calculation, and the safety of bridge construction is ensured. Before leaving the factory, the support must be assembled with a reliable and convenient fixing device to prevent the support from sliding in the transportation and installation processes to cause safety accidents. In addition, with the progress of modern science and technology, the bridge span of the continuous beam is larger and larger, and the long construction period is more and more common. Therefore, the requirements on the support for the prestressed concrete continuous cast-in-place beam are higher and higher, and the support has a pre-deflection function before delivery or installation so as to adapt to displacement of a bridge body under the action of factors such as folding temperature, concrete self shrinkage and creep and the like, reduce deformation of the bridge body and ensure the performance of the bridge body.

However, the conventional mount fixtures currently provide only a fixing function, and do not allow pre-bias adjustment to be performed or performed multiple times. For the product pre-deviation value, a customer can not provide the product pre-deviation value before the support leaves a factory, and the product pre-deviation value is usually actually adjusted according to the actual conditions of beam construction, such as temperature and other factors. In the actual construction process, the delivered product needs to be adjusted on site. At this time, the conventional locking device needs to be removed to adjust the product to be pre-biased, but the matching hole pitch and the like of the parts for the support fixing device are fixed. The fixing device of the original product fails after pre-deviation adjustment, and cannot be used again, and only measures such as temporary welding or skid block are adopted. When the on-site pre-deviation adjustment is performed, special techniques or after-sales personnel need to be assigned to guide the adjustment, so that the after-sales pressure and the cost of the product are increased. In addition, the welding or wood-laying method is adopted to damage the appearance of the delivered product, so that the corrosion resistance of the product is influenced, the product maintenance cost and the customer complaint risk are increased, and the temporary welding, wood-laying method and other methods are adopted in the construction process, so that potential safety hazards exist.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a device for temporarily fixing a bridge support and adjusting pre-deviation, which solves the technical problem that the pre-deviation of the bridge support cannot be efficiently and safely adjusted on site in the actual construction process.

The invention is realized by the following technical scheme:

the utility model provides a device that is used for interim fixed and pre-deflection of bridge beam supports to adjust, includes upper bracket board, the bottom suspension fagging that is connected with bridge superstructure, bridge substructure respectively, be connected with a plurality of interim fixing device between upper bracket board and the bottom suspension fagging, still be equipped with two pre-deflection adjusting device between upper bracket board and the bottom suspension fagging, pre-deflection adjusting device includes and is connected fixed interim fixture block with the upper bracket board and is connected fixed spacing fixture block with the bottom suspension fagging, be equipped with drive assembly between interim fixture block and the spacing fixture block, drive assembly drives the relative bottom suspension fagging of upper bracket board slides.

Further, the transmission assembly comprises a screw hole block installed in a matched mode with the temporary clamping block, the screw hole block is installed in a matched mode through a clamping groove formed in the temporary clamping block in an inserted mode, balls are further arranged in the clamping groove, relative rotation occurs between the screw hole block and the temporary clamping block through the balls, and the trapezoidal screw penetrates through the screw hole block and the two ends of the trapezoidal screw are connected and fixed with the two limiting clamping blocks respectively.

Furthermore, a small hole for meshing the wrench is formed in the screw hole block.

Furthermore, the transmission assembly comprises a screw hole block fixedly mounted with the temporary clamping block, the trapezoidal screw penetrates through the screw hole block, and two ends of the trapezoidal screw are respectively connected with the two limiting clamping blocks in a rotating mode.

Furthermore, a small hole for meshing the wrench is formed in the trapezoidal screw.

Furthermore, the pre-deviation adjusting device and the temporary fixing device are arranged longitudinally along the bridge support.

Compared with the prior art, the invention has the beneficial effects that:

according to the device for temporary fixing and pre-deviation adjusting of the bridge support, the pre-deviation of the bridge support is adjusted by driving the upper support plate and the lower support plate to move relatively through the rotary transmission assembly; and then the bridge support is fixed by the temporary fixing device, the whole construction process is safe and efficient, the cost is low, and additional internal force generated in the beam body can be effectively avoided by pre-deviation adjustment, so that adverse influence on the beam body is reduced, the supporting performance of the bridge support is effectively ensured, and the temporary fixing device is widely applied to bridge engineering.

Drawings

Fig. 1 is a front view of a device for temporary attachment and pre-offset adjustment of a bridge bearer according to a first embodiment of the present invention;

FIG. 2 is a top view of an apparatus for temporary attachment and pre-offset adjustment of a bridge bearer according to a first embodiment of the present invention;

FIG. 3 is a schematic structural view of the threaded block shown in FIG. 1;

FIG. 4 is a schematic view of an installation structure among the screw hole block, the temporary block and the ball shown in FIG. 1;

FIG. 5 is a front view of a device for temporary attachment and pre-offset adjustment of a bridge bearer according to a second embodiment of the present invention;

fig. 6 is a top view of a device for temporary fixing and pre-offset adjustment of a bridge bearer according to the second embodiment of the present invention.

In the figure:

1. an upper support plate; 2. a pre-bias adjustment device; 21. a transmission assembly; 22. a limiting clamping block; 23. a trapezoidal screw; 24. a temporary clamping block; 25. a screw hole block; 26. a ball bearing; 3. a temporary fixing device; 4. a lower support plate.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1-2, a device for temporary fixation and pre-deviation adjustment of a bridge support comprises an upper support plate 1 and a lower support plate 4 which are respectively connected with a bridge superstructure and a bridge substructure, two pre-deviation adjusting devices 2 are arranged between the upper support plate 1 and the lower support plate 4, the pre-deviation adjusting devices 2 are respectively arranged along two longitudinal sides of a bridge, each pre-deviation adjusting device 2 comprises a temporary fixture block 24 fixedly connected with the upper support plate 1 and a limiting fixture block 22 fixedly connected with the lower support plate 4, the upper support plate 1 and the temporary fixture block 24 are fixedly connected with each other by bolts, the lower support plate 4 and the limiting fixture block are fixedly connected with each other by bolts, and a transmission assembly 21 is arranged between the temporary fixture block 24 and the limiting fixture block 22. The transmission assembly 21 rotates to drive the limiting clamping block 22 and the temporary clamping block 24 to move relatively in the longitudinal direction of the bridge, so that the relative movement between the upper support plate 1 and the lower support plate 4 is realized, and the pre-deviation adjustment of the bridge support is realized; still be connected with four interim fixing device 3 between upper bracket board 1 and the bottom suspension bedplate 4, at each two of the vertical both sides of bridge, fix the bridge beam supports after 2 regulation of pre-deviation adjusting device through interim fixing device 3, convenient transportation, and the construction installation is simple.

Specifically, as shown in fig. 4, the transmission assembly 21 includes a screw hole block 25 installed in cooperation with the temporary locking block 24, the screw hole block 25 is installed in cooperation by being inserted into a locking groove on the temporary locking block 24, a ball 26 is further disposed in the locking groove, the screw hole block 25 and the temporary locking block 24 rotate relatively through the ball 26, the ball 26 rolls flexibly, the screw hole block 25 running on the screw hole block can slide flexibly, the situation that the screw hole block 25 rotates due to too large friction force is avoided, and friction can be reduced through other modes. The limiting clamping blocks 22 are provided with round holes matched with the trapezoidal screws 23, the screw hole blocks 25 are provided with threaded holes matched with the trapezoidal screws 23, the trapezoidal screws 23 penetrate through the threaded holes in the screw hole blocks 25, and two ends of each trapezoidal screw 23 are respectively connected and fixed with the two limiting clamping blocks 22. The screw hole block 25 is rotated, and the clamping groove and the ball 26 limit the relative displacement of the screw hole block 25 and the upper support plate 1 in the longitudinal direction of the bridge. The screw hole block 25 is provided with a small hole (as shown in fig. 3) for engagement of a wrench, so that the screw hole block 25 can be rotated by the wrench more conveniently to adjust the offset.

Example two

As shown in fig. 5-6, a device for temporary fixation and pre-deviation adjustment of a bridge support comprises an upper support plate 1 and a lower support plate 4 which are respectively connected with a bridge superstructure and a bridge substructure, two pre-deviation adjusting devices 2 are arranged between the upper support plate 1 and the lower support plate 4, the pre-deviation adjusting devices 2 are respectively arranged along two longitudinal sides of a bridge, each pre-deviation adjusting device 2 comprises a temporary fixture block 24 fixedly connected with the upper support plate 1 and a limiting fixture block 22 fixedly connected with the lower support plate 4, the upper support plate 1 and the temporary fixture block 24 are fixedly connected with each other by bolts, the lower support plate 4 and the limiting fixture block are fixedly connected with each other by bolts, and a transmission assembly 21 is arranged between the temporary fixture block 24 and the limiting fixture block 22. The transmission assembly 21 rotates to drive the limiting clamping block 22 and the temporary clamping block 24 to move relatively in the longitudinal direction of the bridge, so that the relative movement between the upper support plate 1 and the lower support plate 4 is realized, and the pre-deviation adjustment of the bridge support is realized; four temporary fixing devices 3 are connected between the upper support plate 1 and the lower support plate 4, and two temporary fixing devices are arranged on two longitudinal sides of the bridge; the bridge bearing adjusted by the pre-deviation adjusting device 2 is fixed through the temporary fixing device 3, so that the transportation is convenient, and the construction and installation are simple.

Specifically, the transmission assembly 21 includes a screw hole block 25 fixedly mounted with the temporary clamping block 24, the temporary clamping block 24 is connected with the screw hole block 25 through a bolt, a round hole matched with the trapezoidal screw 23 is formed in the limiting clamping block 22, a threaded hole matched with the trapezoidal screw 23 is formed in the screw hole block 25, the trapezoidal screw 23 penetrates through the threaded hole in the screw hole block 25, and two ends of the trapezoidal screw are respectively connected with the two limiting clamping blocks 22 in a rotating mode. The trapezoidal screw 23 is rotated, and the limit fixture block 22 limits the trapezoidal screw 23 to move relative to the lower support plate 4 in the longitudinal direction of the bridge. The trapezoidal screw 23 is provided with a small hole for engaging a wrench. The trapezoidal screw 23 can be more conveniently rotated through the wrench, and the offset is adjusted.

To sum up, adopt the device that is used for interim fixed and the pre-deflection of bridge beam supports to adjust of this application, realize fixing in transportation and the installation to bridge beam supports through interim fixing device, realize adjusting and readjusting the pre-deflection of bridge beam supports through pre-deflection adjusting device. The adjusting device has high safety performance, high construction efficiency and low construction cost, and can be widely applied to bridge engineering. And the additional internal force generated in the beam body can be effectively avoided through pre-deviation adjustment, so that the adverse effect on the beam body is reduced, and the supporting performance of the bridge bearing is effectively ensured.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a device that is used for interim fixed and pre-deflection of bridge beam supports to adjust, includes upper bracket board (1), bottom suspension bedplate (4) of being connected with bridge superstructure, bridge substructure respectively, be connected with a plurality of interim fixing device (3) between upper bracket board (1) and bottom suspension bedplate (4), its characterized in that, still be equipped with two pre-deflection adjusting device (2) between upper bracket board (1) and bottom suspension bedplate (4), pre-deflection adjusting device (2) include be connected fixed interim fixture block (24) with upper bracket board (1) and be connected fixed spacing fixture block (22) with bottom suspension bedplate (4), be equipped with drive assembly (21) between interim fixture block (24) and spacing fixture block (22), drive assembly (21) drive upper bracket board (1) is relative bottom suspension bedplate (4) and slides.

2. The device for temporary fixation and pre-deviation adjustment of a bridge bearer according to claim 1, wherein the transmission assembly (21) comprises a threaded block (25) cooperatively mounted with the temporary clamping block (24), the threaded block (25) is cooperatively mounted by being inserted into a clamping slot on the temporary clamping block (24), a ball (26) is further disposed in the clamping slot, the threaded block (25) and the temporary clamping block (24) relatively rotate through the ball (26), and the trapezoidal screw (23) passes through the threaded block (25) and two ends of the trapezoidal screw are respectively connected and fixed with the two limiting clamping blocks (22).

3. Device for temporary attachment and adjustment of the pre-deflection of a bridge beam according to claim 2, characterized in that the threaded block (25) is provided with a small hole for engagement of a wrench.

4. The device for temporary fixation and pre-deflection adjustment of a bridge bearer according to claim 1, wherein the transmission assembly (21) comprises a threaded block (25) fixedly installed with the temporary clamping block (24), the trapezoidal screw (23) passes through the threaded block (25) and both ends of the trapezoidal screw are respectively rotatably connected with the two limit clamping blocks (22).

5. Device for temporary fixation and pre-deflection adjustment of a bridge bearer according to claim 4, characterized in that the trapezoidal screw (23) is provided with a small hole for a wrench to engage.

6. A device for temporary attachment and adjustment of pre-deflection of a bridge deck according to any of claims 1-5, characterised in that the pre-deflection adjustment means (2) and the temporary attachment means (3) are arranged longitudinally along the bridge deck.